GL5537 Photoresistor Sensor LDR 20-50kΩ 5mm 2Pcs
The GL5537 Photoresistor Sensor LDR 20-50kΩ 5mm 2Pcs is light-sensitive component that changes its resistance based on ambient light intensity. With a resistance range of 20–50kΩ at 10 lux, it delivers reliable sensitivity for detecting light variations in different environments. Compact and easy to use, this LDR is suitable for automatic lighting systems, light sensors, alarms, display dimming, and DIY electronics projects. Supplied in a 2-piece pack, it is a practical choice for both hobbyists and circuit designers.
Features
- 5mm epoxy-coated round head for compact design.
- Light-dependent resistance with wide sensitivity range.
- Resistance: 20–50kΩ at 10 lux illumination.
- Fast response to changing light levels.
- Reliable performance with long service life.
- Easy to integrate into light control and detection circuits.
- Supplied in a 2-piece pack for convenience.
Dimensions
Specifications
| Parameter | Condition | Value |
| Model | — | GL5537 |
| Datasheet | — | GL5537 |
| Diameter | — | 5mm |
| Light Resistance | @ 10 Lux, 25℃ | 20kΩ – 50kΩ |
| Maximum Voltage | @ 25℃ | 150VDC |
| Power Dissipation | @ 25℃ | 90mW |
| Dark Resistance | @ 0 Lux | 5MΩ |
| Gamma Value | 100 – 10 Lux | 0.7 |
| Response Time | — | 30ms |
| Spectral Response Peak | @ 25℃ | 540nm |
| Ambient Temperature Range | — | -30℃ ~ +70℃ |
Applications
- Automatic lighting control (street lights, garden lights, night lamps).
- Light-sensitive alarms and security systems.
- Display brightness adjustment in electronic devices.
- Solar garden lights and energy-saving systems.
- Camera exposure control and light meters.
- DIY electronics and educational projects.
- Light-following robots and sensor-based automation systems.
Package Contents
- 2 x GL5537 Photoresistor Sensor LDR 20-50kΩ 5mm
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